WO1999038281A2 - Spread spectrum phase modulation for suppression of electromagnetic interference in parallel data channels - Google Patents
Spread spectrum phase modulation for suppression of electromagnetic interference in parallel data channels Download PDFInfo
- Publication number
- WO1999038281A2 WO1999038281A2 PCT/US1999/001246 US9901246W WO9938281A2 WO 1999038281 A2 WO1999038281 A2 WO 1999038281A2 US 9901246 W US9901246 W US 9901246W WO 9938281 A2 WO9938281 A2 WO 9938281A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- control voltage
- clock signal
- transmitter
- spread spectrum
- voltage
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
- H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
- H04B15/04—Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2215/00—Reducing interference at the transmission system level
- H04B2215/064—Reduction of clock or synthesizer reference frequency harmonics
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Manipulation Of Pulses (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69932004T DE69932004T2 (en) | 1998-01-20 | 1999-01-20 | SPREADING SPECTRUM PHASE MODULATION FOR SUPPRESSING ELECTROMAGNETIC INTERFERENCE IN PARALLEL DATA CHANNELS |
JP53845499A JP4179568B2 (en) | 1998-01-20 | 1999-01-20 | Spread spectrum phase modulation for electromagnetic interference suppression in parallel data channels |
CA002283945A CA2283945C (en) | 1998-01-20 | 1999-01-20 | Spread spectrum phase modulation for suppression of electromagnetic interference in parallel data channels |
EP99916105A EP0968580B1 (en) | 1998-01-20 | 1999-01-20 | Spread spectrum phase modulation for suppression of electromagnetic interference in parallel data channels |
KR1019997008553A KR20010005496A (en) | 1998-01-20 | 1999-01-20 | Spread spectrum phase modulation for suppression of electromagnetic interference in parallel data channels |
AU34487/99A AU3448799A (en) | 1998-01-20 | 1999-01-20 | Spread spectrum phase modulation for suppression of electromagnetic interferencein parallel data channels |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US7180598P | 1998-01-20 | 1998-01-20 | |
US60/071,805 | 1998-01-20 |
Publications (3)
Publication Number | Publication Date |
---|---|
WO1999038281A2 true WO1999038281A2 (en) | 1999-07-29 |
WO1999038281A3 WO1999038281A3 (en) | 1999-09-30 |
WO1999038281A9 WO1999038281A9 (en) | 1999-11-04 |
Family
ID=22103709
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1999/001246 WO1999038281A2 (en) | 1998-01-20 | 1999-01-20 | Spread spectrum phase modulation for suppression of electromagnetic interference in parallel data channels |
Country Status (8)
Country | Link |
---|---|
US (1) | US6600771B1 (en) |
EP (1) | EP0968580B1 (en) |
JP (1) | JP4179568B2 (en) |
KR (1) | KR20010005496A (en) |
AU (1) | AU3448799A (en) |
CA (1) | CA2283945C (en) |
DE (1) | DE69932004T2 (en) |
WO (1) | WO1999038281A2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2799072A1 (en) * | 1999-09-29 | 2001-03-30 | Mitsubishi Electric Inf Tech | PROCESS FOR TRANSMISSION OF USER DATA AND CONTROL DATA ON CHANNELS OF A TRANSMISSION NETWORK |
EP1125410A1 (en) * | 1998-10-27 | 2001-08-22 | Intel Corporation | Method and apparatus for reducing emi emissions |
FR2809884A1 (en) * | 2000-05-31 | 2001-12-07 | St Microelectronics Sa | Device for reducing electromagnetic emission from electronic circuit, such as eg. microprocessor, for use in microelectronics |
US6912246B1 (en) | 1999-11-17 | 2005-06-28 | Nec Corporation | Clock signal transmitting system, digital signal transmitting system, clock signal transmitting method, and digital signal transmitting method |
EP1688819A1 (en) * | 2005-02-07 | 2006-08-09 | INOVA Semiconductors GmbH | Device and method for serially transmitting data using a spread spectrum to encrease the electromagnetic compatibility |
US7792152B1 (en) | 2004-06-08 | 2010-09-07 | Owlink Technology, Inc. | Scheme for transmitting video and audio data of variable formats over a serial link of a fixed data rate |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW482912B (en) * | 1998-03-02 | 2002-04-11 | Advanced Display Kk | Liquid crystal display device, integrated circuit therefor, method for driving a liquid crystal display device, and apparatus therefor |
US7564283B1 (en) | 1998-06-22 | 2009-07-21 | Xilinx, Inc. | Automatic tap delay calibration for precise digital phase shift |
US6289068B1 (en) * | 1998-06-22 | 2001-09-11 | Xilinx, Inc. | Delay lock loop with clock phase shifter |
US6507182B2 (en) * | 2000-12-29 | 2003-01-14 | Intel Corporation | Voltage modulator circuit to control light emission for non-invasive timing measurements |
US7333527B2 (en) * | 2001-11-27 | 2008-02-19 | Sun Microsystems, Inc. | EMI reduction using tunable delay lines |
KR100859507B1 (en) * | 2001-12-05 | 2008-09-22 | 삼성전자주식회사 | A dithering apparatus and dithering method |
JP2004023556A (en) * | 2002-06-18 | 2004-01-22 | Seiko Epson Corp | Electronic apparatus |
US20050031016A1 (en) * | 2003-08-04 | 2005-02-10 | Lowell Rosen | Epoch-variant holographic communications apparatus and methods |
US20060176934A1 (en) * | 2005-02-07 | 2006-08-10 | Inova Semiconductors Gmbh | Serial transmission of data using spread-spectrum modulation for enhancing electromagnetic compatibility |
US7778377B2 (en) * | 2005-05-31 | 2010-08-17 | Agere Systems Inc. | Methods and apparatus for spread spectrum generation using a voltage controlled delay loop |
US7656214B1 (en) * | 2008-11-18 | 2010-02-02 | Faraday Technology Corp. | Spread-spectrum clock generator |
US7944319B2 (en) * | 2009-03-31 | 2011-05-17 | Texas Instruments Incorporated | Clock spreading systems and methods |
US10009112B2 (en) * | 2014-12-26 | 2018-06-26 | Finisar Corporation | Electromagnetic interference reduction |
JP7217204B2 (en) * | 2019-06-28 | 2023-02-02 | 株式会社アドバンテスト | Signal processing device and signal processing method |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5283807A (en) * | 1992-10-21 | 1994-02-01 | Tutankhamon Electronics, Inc. | EMI suppression coding |
DE19517265A1 (en) * | 1995-05-11 | 1996-11-14 | Vdo Schindling | Interference reduction method esp. for timing signal controlled devices |
EP0828360A1 (en) * | 1996-09-04 | 1998-03-11 | Micronas Intermetall GmbH | Clock generator for producing a low noise system clock |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5974464A (en) * | 1995-10-06 | 1999-10-26 | Silicon Image, Inc. | System for high speed serial video signal transmission using DC-balanced coding |
US5731728A (en) * | 1995-11-13 | 1998-03-24 | National Semiconductor Corporation | Digital modulated clock circuit for reducing EMI spectral density |
US5889819A (en) * | 1996-08-08 | 1999-03-30 | Hewlett-Packard Company | EMI reduction using double sideband suppressed carrier modulation |
KR100475316B1 (en) * | 1997-09-04 | 2005-03-10 | 실리콘 이미지, 인크.(델라웨어주 법인) | Controllable delays in multiple synchronized signals for reduced electromagnetic interference at peak frequencies |
KR100316023B1 (en) * | 1999-11-01 | 2001-12-12 | 박종섭 | Analog-digital mixed type delay locked loop combining voltage controlled oscillator and shift register type delay locked loop |
-
1999
- 1999-01-20 EP EP99916105A patent/EP0968580B1/en not_active Expired - Lifetime
- 1999-01-20 WO PCT/US1999/001246 patent/WO1999038281A2/en active IP Right Grant
- 1999-01-20 US US09/234,777 patent/US6600771B1/en not_active Expired - Lifetime
- 1999-01-20 CA CA002283945A patent/CA2283945C/en not_active Expired - Fee Related
- 1999-01-20 AU AU34487/99A patent/AU3448799A/en not_active Abandoned
- 1999-01-20 KR KR1019997008553A patent/KR20010005496A/en active Search and Examination
- 1999-01-20 JP JP53845499A patent/JP4179568B2/en not_active Expired - Fee Related
- 1999-01-20 DE DE69932004T patent/DE69932004T2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5283807A (en) * | 1992-10-21 | 1994-02-01 | Tutankhamon Electronics, Inc. | EMI suppression coding |
DE19517265A1 (en) * | 1995-05-11 | 1996-11-14 | Vdo Schindling | Interference reduction method esp. for timing signal controlled devices |
EP0828360A1 (en) * | 1996-09-04 | 1998-03-11 | Micronas Intermetall GmbH | Clock generator for producing a low noise system clock |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1125410A1 (en) * | 1998-10-27 | 2001-08-22 | Intel Corporation | Method and apparatus for reducing emi emissions |
EP1125410A4 (en) * | 1998-10-27 | 2003-06-04 | Intel Corp | Method and apparatus for reducing emi emissions |
US7133356B2 (en) | 1998-10-27 | 2006-11-07 | Intel Corporation | Method and apparatus for reducing EMI emissions |
FR2799072A1 (en) * | 1999-09-29 | 2001-03-30 | Mitsubishi Electric Inf Tech | PROCESS FOR TRANSMISSION OF USER DATA AND CONTROL DATA ON CHANNELS OF A TRANSMISSION NETWORK |
EP1089468A1 (en) * | 1999-09-29 | 2001-04-04 | Mitsubishi Electric Information Technology Centre Europe B.V. | Method for the transmission of user data and control data on the channels of a transmission network |
US6912246B1 (en) | 1999-11-17 | 2005-06-28 | Nec Corporation | Clock signal transmitting system, digital signal transmitting system, clock signal transmitting method, and digital signal transmitting method |
FR2809884A1 (en) * | 2000-05-31 | 2001-12-07 | St Microelectronics Sa | Device for reducing electromagnetic emission from electronic circuit, such as eg. microprocessor, for use in microelectronics |
US7792152B1 (en) | 2004-06-08 | 2010-09-07 | Owlink Technology, Inc. | Scheme for transmitting video and audio data of variable formats over a serial link of a fixed data rate |
EP1688819A1 (en) * | 2005-02-07 | 2006-08-09 | INOVA Semiconductors GmbH | Device and method for serially transmitting data using a spread spectrum to encrease the electromagnetic compatibility |
Also Published As
Publication number | Publication date |
---|---|
CA2283945A1 (en) | 1999-07-29 |
WO1999038281A3 (en) | 1999-09-30 |
US6600771B1 (en) | 2003-07-29 |
EP0968580A2 (en) | 2000-01-05 |
CA2283945C (en) | 2006-05-30 |
AU3448799A (en) | 1999-08-09 |
KR20010005496A (en) | 2001-01-15 |
DE69932004T2 (en) | 2007-06-28 |
JP4179568B2 (en) | 2008-11-12 |
JP2001515696A (en) | 2001-09-18 |
WO1999038281A9 (en) | 1999-11-04 |
DE69932004D1 (en) | 2006-08-03 |
EP0968580B1 (en) | 2006-06-21 |
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